Transcripts - Pollution types

3.
Definition
• Pollution is the introduction of
contaminants into the natural environment
that cause adverse change, in the form of
killing of life ,toxicity of environment ,
damage to ecosystem and aesthetics of
our surrounding .
(Wikipedia)

4.
Definition (contd)
• An unwanted change in the environment
which involves the physical, biological and
chemical changes involving air, water and
land which affects the human life in one way
or the other”.
• Pollution has become a serious issue after
World War II in developing countries due to
unchecked rapid industrialization. Pollution is
the root cause of many diseases that kill and
disable living organisms.

17.
How to control air
pollution?
• Maintaining a healthy distance between the
industrial and residential areas.
• The chimneys should be constructed tall in
size so that the emissions must be released
higher up in the environment
• The sulphur must be removed after burning.
• The gasoline must have anti knocking
agents..
• The mining area should be planted with trees.

18.
How to control air pollution?
• The coal fuel should be replaced with gas
fuel to control the air pollution.
• The automobiles must be designed with
emission control system.
• The wastes must be removed and recycled
in the industrial plants and refineries.
• Plants like pine and ribes need to be
planted to metabolize the nitrogen oxides
and other pollutants.

19.
How to control air
pollution?
• Timely servicing of the car helps to keep it
in a good condition, and also minimizes fuel
exhaustion
• Using public transportation helps to
prevent the air pollution
• Using alternative energy sources like solar
energy, hydroelectric energy, and wind
energy

20.
WATER POLLUTION

21.
Water Pollution….

22.
Water Pollution…
• Water pollution is the contamination of
water bodies (e.g. lakes, rivers, oceans,
aquifers and groundwater).
• Water pollution occurs when pollutants are
discharged directly or indirectly into water
bodies without adequate treatment to
remove harmful compounds.
.

23.
Water Pollution…
• Water pollution affects plants and
organisms living in these bodies of water.
In almost all cases the effect is damaging
not only to individual species and
populations, but also to the natural
biological communities

28.
Preventing Water
Pollution…
• Conserve water by turning off the tap.
• Mind what you throw down your sink or toilet.
• Don’t throw paints and oils in water channels.
• Use environment friendly household products,
such as washing powder, household cleaning
agents etc.
• Take great care not to overuse pesticides and
fertilizers.
• Don’t throw litter into rivers, lakes or oceans. Help
clean up any litter you see on beaches or in rivers
and lakes, make sure it is safe to collect the litter
and put it in a nearby dustbin.

29.
Treating Polluted Water...
• Suspended, solid particles and inorganic
material can be removed by the use of
filters.
• Use of biological filters and processes can
naturally degrade the organic waste
material.
• After above two steps chemical additives
are supplied to get rid of any left-over
impurities.

47.
How to control soil
pollution?
• Limit the use of fertilizers and pesticides
• Awareness about biological control methods
and their implementation
• The grazing must be controlled and forest
management should be done properly
• The afforestation and reforestation must take
place
• Proper preventive methods like shields should
be used in areas of wind erosion and wind
breaks